Watch live: The third launch attempt of Terran 1 is slated for Wednesday at 10:00 p.m. ET.
Relativity Space, founded in 2015 by two former engineers with Blue Origin, claims that Terran 1 is the largest 3D-printed structure ever built. With a dry weight of 9.3 metric tons, the two-stage rocket is 85% 3D-printed by mass. Terran 1 will need to survive the tremendous pressures and vibrations experienced during launch, including the Max-Q stage, the moment when a rocket experiences the greatest aerodynamic stress.
Nine 3D-printed Aeon engines power the rocket’s booster, while a single 3D-printed Aeon Vac engine powers the second stage. A combination of liquid oxygen and liquid natural gas powers these engines, a mixture that’s “not only the best for rocket propulsion, but also for reusability, and the easiest to eventually transition to methane on Mars,” according to the company.given the experimental nature of the flight.
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